Syllogistic fallacy

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Syllogistic fallacies are logical fallacies that occur in syllogisms. They include:

Any syllogism type (other than polysyllogism and disjunctive):

• fallacy of four terms

Occurring in categorical syllogisms:

• affirmative conclusion from a negative premise
• existential fallacy
• fallacy of exclusive premises
• fallacy of the undistributed middle
• illicit major
• illicit minor
• fallacy of necessity

Occurring in disjunctive syllogisms:

• affirming a disjunct

Occurring in statistical syllogisms (dicto simpliciter fallacies):

• accident
• converse accident

External links

• [Fallacy files: Syllogistic fallacy]
• [Stephen's guide: Syllogistic fallacies]

 

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